After the good start, there are three multi-issue stories of varying quality (one of which was delayed from its original 1979 writing to 1986, long after the other stories had been published) with somewhat repetitious stories (wizards are like cockroaches in this damn series which is to be expected but still) and less than enthralling characters as Tyndall comes off like Luke Skywalker if he was just naive and whiny with no charm (there is a fine line between charmingly naive and just really stupid) and Velanna, the female elf is only interesting in the last arc where she is controlled by the bad guy while Mud-Butt is probably the best, mainly because I could see Sean Connery voicing him if it was an animated film.
Apart from that, the art is quite nice with a blend of standard comics art to begin with, leading to some very nice painted art for the later stories that only occasionally looks like the painting on the back of that skeevy looking van you pass on the highway every now and then and end up guessing with your friends as to whether or not the driver had just killed his latest victim or was taking said victim back to his home to kill there.
Not a great series but I am glad I read it, if for nothing else other than that van joke.
There are some inspired gems though as Frankie goes up against Dracula himself followed by a confrontation with the last living Frankenstein and his huge, grotesque Russian henchman Ivan. A shift forward to modern times sort of works but apart from the requisite appearance in Marvel Team-Up with Spider-Man, the big guy sort of just peters out.
I recommend you try and seek out all the titles I mentioned in this post. They might not wow you, but you won;t be bored.